Messages in this thread |  | | Date | Sun, 13 Mar 2022 03:03:57 +0800 | From | kernel test robot <> | Subject | [linux-stable-rc:queue/5.10 6159/9999] arch/powerpc/kernel/smp.c:1380:7: error: variable 'ret' set but not used |
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Hi Srikar,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.10 head: 2e0c126269348617f46918f1261ec99883358841 commit: e91077cf1780108dc586cedf1d19f65b44fa3870 [6159/9999] powerpc/smp: Update cpu_core_map on all PowerPc systems config: powerpc-xes_mpc85xx_defconfig (https://download.01.org/0day-ci/archive/20220313/202203130226.6bWnmxN8-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 43f668b98e8d87290fc6bbf5ed13c3ab542e3497) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=e91077cf1780108dc586cedf1d19f65b44fa3870 git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc queue/5.10 git checkout e91077cf1780108dc586cedf1d19f65b44fa3870 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/powerpc/kernel/smp.c:551:6: error: no previous prototype for function 'tick_broadcast' [-Werror,-Wmissing-prototypes] void tick_broadcast(const struct cpumask *mask) ^ arch/powerpc/kernel/smp.c:551:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tick_broadcast(const struct cpumask *mask) ^ static >> arch/powerpc/kernel/smp.c:1380:7: error: variable 'ret' set but not used [-Werror,-Wunused-but-set-variable] bool ret; ^ arch/powerpc/kernel/smp.c:1491:5: error: no previous prototype for function 'setup_profiling_timer' [-Werror,-Wmissing-prototypes] int setup_profiling_timer(unsigned int multiplier) ^ arch/powerpc/kernel/smp.c:1491:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int setup_profiling_timer(unsigned int multiplier) ^ static 3 errors generated.
vim +/ret +1380 arch/powerpc/kernel/smp.c
b8a97cb4599cda Srikar Dronamraju 2020-09-21 1373 df52f6714071c4 Oliver O'Halloran 2017-06-29 1374 static void add_cpu_to_masks(int cpu) df52f6714071c4 Oliver O'Halloran 2017-06-29 1375 { bf6476152a0a08 Srikar Dronamraju 2021-04-15 1376 struct cpumask *(*submask_fn)(int) = cpu_sibling_mask; df52f6714071c4 Oliver O'Halloran 2017-06-29 1377 int first_thread = cpu_first_thread_sibling(cpu); bf6476152a0a08 Srikar Dronamraju 2021-04-15 1378 int chip_id = cpu_to_chip_id(cpu); 84dbf66c634720 Srikar Dronamraju 2020-10-19 1379 cpumask_var_t mask; bf6476152a0a08 Srikar Dronamraju 2021-04-15 @1380 bool ret; df52f6714071c4 Oliver O'Halloran 2017-06-29 1381 int i; df52f6714071c4 Oliver O'Halloran 2017-06-29 1382 df52f6714071c4 Oliver O'Halloran 2017-06-29 1383 /* df52f6714071c4 Oliver O'Halloran 2017-06-29 1384 * This CPU will not be in the online mask yet so we need to manually df52f6714071c4 Oliver O'Halloran 2017-06-29 1385 * add it to it's own thread sibling mask. df52f6714071c4 Oliver O'Halloran 2017-06-29 1386 */ df52f6714071c4 Oliver O'Halloran 2017-06-29 1387 cpumask_set_cpu(cpu, cpu_sibling_mask(cpu)); e91077cf178010 Srikar Dronamraju 2021-08-26 1388 cpumask_set_cpu(cpu, cpu_core_mask(cpu)); df52f6714071c4 Oliver O'Halloran 2017-06-29 1389 df52f6714071c4 Oliver O'Halloran 2017-06-29 1390 for (i = first_thread; i < first_thread + threads_per_core; i++) df52f6714071c4 Oliver O'Halloran 2017-06-29 1391 if (cpu_online(i)) df52f6714071c4 Oliver O'Halloran 2017-06-29 1392 set_cpus_related(i, cpu, cpu_sibling_mask); df52f6714071c4 Oliver O'Halloran 2017-06-29 1393 425752c63b6f3f Gautham R. Shenoy 2018-10-11 1394 add_cpu_to_smallcore_masks(cpu); 84dbf66c634720 Srikar Dronamraju 2020-10-19 1395 84dbf66c634720 Srikar Dronamraju 2020-10-19 1396 /* In CPU-hotplug path, hence use GFP_ATOMIC */ bf6476152a0a08 Srikar Dronamraju 2021-04-15 1397 ret = alloc_cpumask_var_node(&mask, GFP_ATOMIC, cpu_to_node(cpu)); 84dbf66c634720 Srikar Dronamraju 2020-10-19 1398 update_mask_by_l2(cpu, &mask); 2a636a56d2d396 Oliver O'Halloran 2017-06-29 1399 b8a97cb4599cda Srikar Dronamraju 2020-09-21 1400 if (has_coregroup_support()) 84dbf66c634720 Srikar Dronamraju 2020-10-19 1401 update_coregroup_mask(cpu, &mask); 84dbf66c634720 Srikar Dronamraju 2020-10-19 1402 bf6476152a0a08 Srikar Dronamraju 2021-04-15 1403 if (shared_caches) bf6476152a0a08 Srikar Dronamraju 2021-04-15 1404 submask_fn = cpu_l2_cache_mask; bf6476152a0a08 Srikar Dronamraju 2021-04-15 1405 bf6476152a0a08 Srikar Dronamraju 2021-04-15 1406 /* Update core_mask with all the CPUs that are part of submask */ bf6476152a0a08 Srikar Dronamraju 2021-04-15 1407 or_cpumasks_related(cpu, cpu, submask_fn, cpu_core_mask); bf6476152a0a08 Srikar Dronamraju 2021-04-15 1408 bf6476152a0a08 Srikar Dronamraju 2021-04-15 1409 /* Skip all CPUs already part of current CPU core mask */ bf6476152a0a08 Srikar Dronamraju 2021-04-15 1410 cpumask_andnot(mask, cpu_online_mask, cpu_core_mask(cpu)); bf6476152a0a08 Srikar Dronamraju 2021-04-15 1411 e91077cf178010 Srikar Dronamraju 2021-08-26 1412 /* If chip_id is -1; limit the cpu_core_mask to within DIE*/ e91077cf178010 Srikar Dronamraju 2021-08-26 1413 if (chip_id == -1) e91077cf178010 Srikar Dronamraju 2021-08-26 1414 cpumask_and(mask, mask, cpu_cpu_mask(cpu)); e91077cf178010 Srikar Dronamraju 2021-08-26 1415 bf6476152a0a08 Srikar Dronamraju 2021-04-15 1416 for_each_cpu(i, mask) { bf6476152a0a08 Srikar Dronamraju 2021-04-15 1417 if (chip_id == cpu_to_chip_id(i)) { bf6476152a0a08 Srikar Dronamraju 2021-04-15 1418 or_cpumasks_related(cpu, i, submask_fn, cpu_core_mask); bf6476152a0a08 Srikar Dronamraju 2021-04-15 1419 cpumask_andnot(mask, mask, submask_fn(i)); bf6476152a0a08 Srikar Dronamraju 2021-04-15 1420 } else { bf6476152a0a08 Srikar Dronamraju 2021-04-15 1421 cpumask_andnot(mask, mask, cpu_core_mask(i)); bf6476152a0a08 Srikar Dronamraju 2021-04-15 1422 } bf6476152a0a08 Srikar Dronamraju 2021-04-15 1423 } bf6476152a0a08 Srikar Dronamraju 2021-04-15 1424 84dbf66c634720 Srikar Dronamraju 2020-10-19 1425 free_cpumask_var(mask); a8a5356cd511db Paul Mackerras 2013-08-12 1426 } a8a5356cd511db Paul Mackerras 2013-08-12 1427
:::::: The code at line 1380 was first introduced by commit :::::: bf6476152a0a084038b12b9d770e32717f54a6ab powerpc/smp: Reintroduce cpu_core_mask
:::::: TO: Srikar Dronamraju <srikar@linux.vnet.ibm.com> :::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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